FILE - Linda Ronstadt performs at the Newport Folk Festival in Newport, R.I., Aug. 3, 2007. Ronstadt revealed this week that she has been diagnosed with Parkinson's disease.

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The 67-year-old singer, who will publish her memoir, Simple Dreams, next month, revealed her condition Friday in an interview with AARP.

The singer of such '70s and '80s hits as You're No Good, Hurt So Bad and Don't Know Much now uses poles to assist her when walking on uneven ground and travels with a wheelchair. She says she was diagnosed with the neurological disorder eight months ago, though she began experiencing symptoms, including hand ...